DTC B1131 [ADVANCED KEYLESS SYSTEM]


DTC B1131	Keyless antenna (exterior, rear)
DETECTION CONDITION	Keyless antenna dose not operated.
POSSIBLE CAUSE	• Keyless antenna (exterior, rear) malfunction • Open or short circuit in wiring harness between keyless control module and keyless antenna • Keyless control module malfunction


STEP	INSPECTION		ACTION
1	INSPECT COMMUNICATION CIRCUIT FOR CONTINUITY • Disconnect keyless control module connector and keyless antenna (exterior, rear) connector. • Inspect the continuity between the following connector terminals. - keyless control module: 2E-keyless antenna: A - keyless control module: 2F-keyless antenna: B • Is there continuity?	Yes	• Replace keyless antenna (exterior, rear). (See KEYLESS ANTENNA REMOVAL/INSTALLATION) • Go to next step.
1		No	• Repair the wiring harness between the keyless antenna (exterior, rear) and keyless control module. • Go to next step.
2	INSPECT KEYLESS CONTROL MODULE • Turn the ignition switch to the ON position. • Is the DTC displayed? - M-MDS: B1131	Yes	Replace the keyless control module and perform the resetting procedure for the advanced keyless system when replacing the keyless control module. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION.) (See CARD KEY ID CODE REGISTRATION [WITH ADVANCED KEYLESS SYSTEM]) (See STEERING LOCK UNIT ID CODE REGISTRATION [WITH ADVANCED KEYLESS SYSTEM]) (See KEYLESS CONTROL MODULE CONFIGULATION [WITH ADVANCED KEYLESS SYSTEM]) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [WITH ADVANCED KEYLESS SYSTEM]) (See SECURITY ACCESS PROCEDURE)
2		No	DTC troubleshooting completed.